Assertion: Cubical void is formed in simple cubic unit cell.
Reason: In simple cubic unit cell, atoms are present only at corners.
Answer & explanation
Correct answer: option 1
Cubical voids
It is formed by close packing of eight corner atoms in a simple cubic unit cell.
Coordination number = 8
It is surrounded by eight spheres located at the corners of a cube.
Cubical void is located at body center of a simple cube.